1-Methoxypentamethyldisiloxane CAS 18156-38-2

Purity 97%+In StockPharmaceutical Standards
CAS No.18156-38-2
Molecular FormulaC6H18O2Si2
Molecular Weight178.38 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1-Methoxypentamethyldisiloxane CAS 18156-38-2 chemical structure

Description

As a certified reference material (CRM), 1-Methoxypentamethyldisiloxane meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

CATO supplies 1-Methoxypentamethyldisiloxane (CAS 18156-38-2), a certified reference material (molecular formula C6H18O2Si2, MW 178.38 g/mol) for analytical method development and quality control.

Structurally, 1-Methoxypentamethyldisiloxane (C6H18O2Si2) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of -2.0, corresponding to approximately 0 ring(s) or double-bond equivalent(s). With a molecular weight of 178.38 g/mol, it falls into the medium-molecular-weight range.

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

Physical & Chemical Properties

Molecular FormulaC6H18O2Si2
Molecular Weight178.38 g/mol
Purity97%+
StorageStore at 2-8°C
Solubility (reference)Soluble in methanol, acetonitrile, DMSO, water (slightly soluble)
StabilityStable under recommended storage conditions
Degree of Unsaturation (DBE)-2.0
CAS Registry Year (est.)1962

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